Location
Grand Rapids, Michigan
Start Date
14-5-2024 11:30 AM
End Date
14-5-2024 12:00 PM
Description
The Tennessee Valley Authority (TVA) is in the process of closing the former CCR pond and landfill at the Shawnee Fossil Plant in Paducah, Kentucky. This presentation will be a case study of the unique project and the innovative solutions implemented throughout design and construction. During closure construction, free water was removed via pumping and a wellpoint dewatering system was necessary to remove interstitial water within the pond and allow for CCR placement within previously ponded areas. Over 4 million cubic yards of material has been moved from the landfill to contour and create closure grades in the former pond area. Intelligent Compaction technology, as opposed to traditional compaction testing, was implemented to improve compaction quality of the fill to minimize settlement and improve stability of the embanked materials. At the completion of closure construction, a ClosureTurf final cover system is being deployed across more than 300 acres of the site. This final cover system grants flexibility in future use of the facility as well. TVA will install a PowerCap solar panel system directly onto the ClosureTurf following closure construction, which effectively results in a former CCR facility footprint being utilized for electricity generation after closure.
Document Type
Presentation
Innovative Solutions for a Unique CCR Facility Closure – A Case Study
Grand Rapids, Michigan
The Tennessee Valley Authority (TVA) is in the process of closing the former CCR pond and landfill at the Shawnee Fossil Plant in Paducah, Kentucky. This presentation will be a case study of the unique project and the innovative solutions implemented throughout design and construction. During closure construction, free water was removed via pumping and a wellpoint dewatering system was necessary to remove interstitial water within the pond and allow for CCR placement within previously ponded areas. Over 4 million cubic yards of material has been moved from the landfill to contour and create closure grades in the former pond area. Intelligent Compaction technology, as opposed to traditional compaction testing, was implemented to improve compaction quality of the fill to minimize settlement and improve stability of the embanked materials. At the completion of closure construction, a ClosureTurf final cover system is being deployed across more than 300 acres of the site. This final cover system grants flexibility in future use of the facility as well. TVA will install a PowerCap solar panel system directly onto the ClosureTurf following closure construction, which effectively results in a former CCR facility footprint being utilized for electricity generation after closure.
